The patch file pulled in by the initMultiDomain.sh script (https://github.com/tpokorra/kolab3_tbits_scripts/blob/master/kolab3.1/initMultiDomain.sh) for freebusy is not correct. The patch file in the bugzilla ticket #2630 (https://issues.kolab.org/show_bug.cgi?id=2630) which addresses the same issue is correct.